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| Santos,Taciana O. dos; Moura,Geber B. de A.; Silva,Bernardo B. da; Oliveira,Leidjane M. M. de; Machado,Celia C. C.. |
| Urbanization has caused significant environmental impacts, replacing natural surfaces by buildings, decreasing green vegetated areas, soil sealing and atmospheric pollution which contribute to increase the land surface temperature in such areas. Thus, this study aimed to analyze the influence of urbanization on land surface temperature (Ts) in Recife city - Pernambuco (PE), in Brazil, using the Thematic Mapper (TM) sensor images from Landsat 5 satellite. To perform the study, images of August 4, 1998 and September 6, 2010 were obtained and processed to generate Ts thematic maps of Recife-PE and of two districts of this city (Curado and Casa Amarela), in order to analyze the transformation dynamics that has occurred in the area. Through the profile produced... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Urban climate; Landsat; Ambient comfort; Thermal infrared. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162013000600016 |
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| Silva,Bernardo B. da; Braga,Alexandra C.; Braga,Célia C.; Oliveira,Leidjane M. M. de; Montenegro,Suzana M. G. L.; Barbosa Junior,Bernardo. |
| ABSTRACT The surface albedo plays an important role in the exchanges of energy and mass in the planetary boundary layer. Therefore, changes in albedo affect the balance of radiation and energy at the surface, which can be detected with its monitoring. Albedo determination has been performed through various sensors, but there is not yet any publication dealing with albedo calculation procedures using OLI (Operational Land Imager) - Landsat 8 images. The objective of the study is to present the procedures for computing the albedo with OLI images and map it in irrigated areas of the São Gonçalo Irrigated District, PB, Brazil. Images of the year 2013, path 215 and row 65, were selected. The data necessary for calculating the albedo were extracted from each... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Radiance; Spectral reflectance; Atmospheric transmittance; Net radiation. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016000100003 |
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| Oliveira,Leidjane M. M. de; Montenegro,Suzana M. G. L.; Silva,Bernardo B. da; Antonino,Antonio C. D.; Moura,Albert E. S. S. de. |
| Objetivou-se, com este trabalho, avaliar a evapotranspiração real diária - ETr por sensoriamento remoto e comparar os resultados com a ETr obtida segundo o balanço de energia com a técnica da razão de Bowen, na Bacia Hidrográfica do Rio Tapacurá, Pernambuco, Brasil. Utilizaram-se o Surface Energy Balance Algorithm for Land (SEBAL) e produtos do Moderate Resolution Imaging Spectroradiometer (MODIS) complementados com dados obtidos em campanha experimental conduzida na bacia no período de janeiro de 2010 a agosto de 2011. A ETr pelo SEBAL se situou entre 0 e 6 mm d-1, com maiores valores no reservatório do Tapacurá e os menores nas áreas urbanas. Em áreas de pastagem a ETr obtida pela razão de Bowen variou de 3,6 a 4,9 mm d-1. O SEBAL propiciou resultados da... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Balanço de energia; Recurso hídrico; Razão de Bowen. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662014001000008 |
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